A039317 Numbers whose base-7 representation has the same nonzero number of 1's and 5's.

12, 36, 54, 68, 75, 82, 84, 86, 87, 88, 90, 96, 110, 134, 159, 183, 208, 232, 246, 252, 254, 255, 256, 258, 260, 267, 274, 288, 306, 330, 348, 362, 369, 376, 378, 380, 381, 382, 384, 390, 432, 446, 460, 467, 474, 476, 478, 479, 480, 482, 488, 495, 509, 516

Offset

1,1

Links

Table of n, a(n) for n=1..54.

Mathematica

Select[Range[600], DigitCount[#, 7, 1]==DigitCount[#, 7, 5]>0&] (* Harvey P. Dale, Oct 19 2024 *)

Crossrefs

Cf. A007093.

Sequence in context: A074234 A076515 A371415 * A298942 A322411 A339425

Adjacent sequences: A039314 A039315 A039316 * A039318 A039319 A039320

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved